Toner

Abstract

Provided is a toner containing a colorant and a binder resin, wherein, in a wettability test of the toner with respect to a methanol/water mixed solvent, the methanol concentration when the transmittance of light at a wavelength of 780 nm is 50% is at least 5.0 volume % and not more than 30.0 volume %, and the interparticle force measured by rupturing a consolidation of the toner formed by compression of the toner with a load of 78.5 N is at least 1.0 nN and not more than 25.0 nN.

What is claimed is: 
     
       1. A toner, comprising:
 a toner core particle comprising a colorant and a binder resin; and 
 a surface layer containing an organosilicon polymer, the surface layer being on the toner core particle, wherein 
 a fixing ratio of the organosilicon polymer to the core particle is 90.0 to 100.0%, 
 in a wettability test of the toner with respect to a methanol/water mixed solvent, a methanol concentration at a time when a transmittance of light at a wavelength of 780 nm is 50% is 5.0 to 30.0 volume %, and 
 an interparticle force measured by rupturing a consolidation of the toner formed by compressing the toner with a load of 78.5 N is 1.0 to 25.0 nN. 
 
     
     
       2. The toner according to  claim 1 , wherein the methanol concentration in the wettability test is 5.0 to 20.0 volume %. 
     
     
       3. The toner according to  claim 1 , wherein the content of the organosilicon polymer in the toner is 0.5 to 5.0 mass %. 
     
     
       4. The toner according to  claim 1 , wherein the organosilicon polymer is a polymer comprising a structure represented by R a —SiO 3/2  
 where R a  represents a hydrocarbon group having 1 to 6 carbons or a vinyl polymer segment containing a substructure represented by formula (i) or formula (ii) 
 
       
         
           
           
               
               
           
         
         where * represents a binding segment with Si in R a —SiO 3/2  and L represents an alkylene group or arylene group. 
       
     
     
       5. The toner according to  claim 1 , wherein the fixing ratio of said organosilicon polymer to said core particle is 92.0 to 99.0%,
 the methanol concentration in the wettability test is 5.0 to 20.0 volume %, and 
 the content of the organosilicon polymer in the toner is 0.5 to 5.0 mass %.